var Cookies = {
        	     set: function(name, value) {
        	         var argv = arguments;
        	         var argc = arguments.length;
        	         var expires = (argc > 2) ? argv[2] : null;
        	         var path = (argc > 3) ? argv[3] : '/';
        	         var domain = (argc > 4) ? argv[4] : null;
        	         var secure = (argc > 5) ? argv[5] : false;
        	         document.cookie = name + "=" + escape(value) +
        	       ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
        	       ((path == null) ? "" : ("; path=" + path)) +
        	       ((domain == null) ? "" : ("; domain=" + domain)) +
        	       ((secure == true) ? "; secure" : "");
        	     },
        	     get: function(name) {
        	         var arg = name + "=";
        	         var alen = arg.length;
        	         var clen = document.cookie.length;
        	         var i = 0;
        	         var j = 0;
        	         while (i < clen) {
        	             j = i + alen;
        	             if (document.cookie.substring(i, j) == arg)
        	                 return Cookies.getCookieVal(j);
        	             i = document.cookie.indexOf(" ", i) + 1;
        	             if (i == 0)
        	                 break;
        	         }
        	         return null;
        	     },

        	     clear: function(name) {
        	         if (Cookies.get(name)) {
        	             var expdate = new Date();
        	             expdate.setTime(expdate.getTime() - (86400 * 1000 * 1));
        	             Cookies.set(name, "", expdate);
        	         }
        	     },

        	     getCookieVal: function(offset) {
        	         var endstr = document.cookie.indexOf(";", offset);
        	         if (endstr == -1) {
        	             endstr = document.cookie.length;
        	         }
        	         return unescape(document.cookie.substring(offset, endstr));
        	     }
        	 };